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Targeting CD39 in cancer
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Journal Article
Targeting CD39 in cancer
2020
Overview
The ATP–adenosine pathway functions as a key modulator of innate and adaptive immunity within the tumour microenvironment. Consequently, multiple clinical strategies are being explored to target this pathway for the treatment of cancer; in particular, recent clinical data with CD73 antagonists and inhibitors of A2A receptors have demonstrated the therapeutic potential of modulating this pathway. Now, inhibitors of the ectonucleotidase CD39, the rate-limiting enzyme in the conversion of ATP to immunomodulatory adenosine, are entering clinical trials. Consequently, there is currently a focus on understanding the impact of CD39 enzymatic function on innate and adaptive immunity and how therapeutic modulation of this pathway alters their functional potential within the tumour microenvironment. Recent findings reveal multipronged mechanisms of action of CD39 antagonism that rely not only on preventing the accumulation of adenosine but also on the stabilization of pro-inflammatory extracellular ATP to restore antitumour immunity. Here, we review the impact of CD39 expression and ectonucleotidase activity on immunity with a focus on the setting of oncology. Additionally, we discuss the implications for immunotherapy strategies targeting CD39, including their inclusion in rational combination therapies.The ATP–adenosine pathway plays an important role in modulating innate and adaptive immune responses in the tumour microenvironment. Here, the authors focus on CD39, a key enzyme in the ATP–adenosine pathway, and examine immunotherapeutic strategies that target it.
Publisher
Nature Publishing Group
Subject
